She looks sad. Could you please tell me that prevents her from being as happy as before?[ ]

Tony and I are good friends, but we are in different ____.

The food in the restaurant tastes ________.

Every minute should be made full ___ of ___ our lessons well.

Thanks to the work of UNICEF(联合国儿童基金会). Otherwise many children 　　　　 the chance of living a good life.